One site I love to visit regularly is The Crafty Crow. It overflows with great ideas of creative things to do with kids (and grown ups too!)
The Crafty Crow is hosting a Winter Holiday Giveaway Week. The sponsors have some really awesome stuff. You've got until Saturday, December 4th to stop by and enter the various giveaways. Good luck!
(If I was really clever, I would know how to embed the image above, so that you can click it and be linked to the giveaway. Sadly it isn't working for me, so you will have to use the links in the text instead!)